EP 0181624 B1 19891206 - COATING OF SEMICONDUCTOR WAFERS AND APPARATUS THEREFOR
Title (en)
COATING OF SEMICONDUCTOR WAFERS AND APPARATUS THEREFOR
Publication
Application
Priority
- EP 85114268 A 19820111
- CA 368517 A 19810114
Abstract (en)
[origin: EP0181624A1] In the production of coatings on semiconductor wafers, fragile equipment is used and also difficulties in obtaining uniform coatings arise. The invention provides a form of boat (10) for holding wafers and a manifold structure (22) for feeding gases to the boats and wafers, which are less fragile, cheaper and easier to manufacture and give more uniform coatings. The boats (10) are relatively short, of semi-cylindrical form with slots (16) through which gas can flow, and with rails (11, 12, 13), for positioning and holding wafers at correct heights. The manifolds (22) has apertures (35) which are spaced at varying distances along the manifold as compared to the conventional longitudinal slot. The invention is particularly applicable to producing oxide coatings and polycrystalline silicon coatings on silicon wafers.
IPC 1-7
IPC 8 full level
C23C 16/455 (2006.01); C23C 16/458 (2006.01); C30B 25/12 (2006.01); C30B 25/14 (2006.01); C30B 31/16 (2006.01); C30B 33/00 (2006.01); C23C 16/44 (2006.01)
CPC (source: EP)
C23C 16/455 (2013.01); C23C 16/45578 (2013.01); C23C 16/458 (2013.01); C30B 25/12 (2013.01); C30B 25/14 (2013.01); C30B 31/16 (2013.01); C30B 33/005 (2013.01)
Designated contracting state (EPC)
CH DE FR GB LI NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 85114268 A 19820111